Curienite Mineral Data

Curienite Mineral Data +

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General Curienite Information

Chemical Formula:

Pb(UO2)2V2O8·5(H2O)

Composition:

Molecular Weight = 1,067.21 gm

Uranium 44.61 % U 50.60 % UO₂

Vanadium 9.55 % V 17.04 % V₂O₅

Hydrogen 0.94 % H 8.44 % H₂O

Lead 19.42 % Pb 20.91 % PbO

Oxygen 25.49 % O

______ ______

100.00 % 97.00 % = TOTAL OXIDE

Empirical Formula:

Pb(UO₂)₂V⁵⁺₂O₈·5(H₂O)

IMA Status:

Approved IMA 1968

Locality:

Link to MinDat.org Location Data.

Synonym:

ICSD 23515

PDF 22-402

Curienite Image

Images:

Curienite Francevillite

Comments: Intense yellow curienite and orange francevillite.
Location: Mouonana, Haut-Ogoue, Gabon. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Curienite Crystallography

Axial Ratios:

a:b:c =1.2307:1:1.9337

Cell Dimensions:

a = 10.4, b = 8.45, c = 16.34, Z = 4; V = 1,435.96 Den(Calc)= 4.94

Crystal System:

Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: Pcan

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 3.005(1), 8.19(1), 4.1(0.8),

Crystal Structure:

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Borene J , Cesbron F , Bulletin de la Societe Francaise de Mineralogie et de Cristallographie , 94 (1971) p.8-14, Structure cristalline de la curienite Pb(UO2)2(VO4)2(H2O)5, Locality: Mounana, Gabon

Physical Properties of Curienite

Color:

Canary yellow.

Density:

4.88

Hardness:

3 - Calcite

Luster:

Adamantine - Pearly

Streak:

light yellow

Optical Properties of Curienite

Optical Data:

NCalc= 1.82 - from Gladstone-Dale relationship (KC = 0.1651) where Ncalc=Dcalc*KC+1
NCalc= 1.81 - from Gladstone-Dale relationship (KC = 0.1651) where Ncalc=Dmeas*KC+1

Calculated Properties of Curienite

Electron Density:

r_electron=4.24 gm/cc
note: r_Curienite=4.94 gm/cc.

Fermion Index

Fermion Index = 0.04648
Boson Index = 0.95352

Photoelectric:

PE_Curienite=1,528.41 barns/electron
U=PE_Curienite x r_electron=6,480.55 barns/cc.

Radioactivity:

GRapi = 3,263,540.11 (Gamma Ray American Petroleum Institute Units)

Curienite is Radioactive as defined in 49 CFR 173.403. Greater than 70 Bq / gram.

Estimated Maximum U.S. Postal Shipping Size (10 mRem/hr limit, Unshielded 10 cm box) 9.32 ± 2.33 grams of pure Curienite .
Estimated Maximum U.S. Postal Shipping Size (10 mRem/hr limit, Unshielded 100 cm box) 932.01 ±233.00 grams of pure Curienite .

**Estimated Radioactivity from Curienite** - very strong
Specimen Size Weight/Volume (Sphere) *	Calculated Activity Bequerols (Bq)	Calculated Activity Curies (Ci)	Estimated Activity GR(api)	Estimated Exposure (mRem**)/hr If Held in Hand For One Hour
1000 gm / 7.28 cm	79,847,765	2.16E-03	3,263,540.11	1,072.94
100 gm / 3.38 cm	7,984,777	2.16E-04	326,354.01	107.29
10 gm / 1.57 cm	798,478	2.16E-05	32,635.40	10.73
1 gm / 7.28 mm	79,848	2.16E-06	3,263.54	1.07
0.1 gm / 3.38 mm	7,985	2.16E-07	326.35	0.11
0.01 gm / 1.57 mm	798	2.16E-08	32.64	0.01
0.001 gm / 0.73 mm	80	2.16E-09	3.26	0.00

Weight of pure Curienite in grams (gm) and Calculated Diameter of a Sphere with a Density of 4.94 gm/cc.*
Goverment Estimate of Average Annual Exposure ( 360 mRem) **
Note: 10 microsieverts/hr = 1 mRem/hr **
Max Permissable Adult Dose 50,000 mRem/yr (hands), 15,000 mRem/yr (eyes)
Lethal Dose LD(50) Exposure 400,000 to 500,000 mRem

Curienite Classification

Dana Class:

40.2a.27.2 (40)Hydrated Phosphates, etc

(40.2a)where A++ (B++)2 (XO4) · x(H2O), containing (UO2)++

(40.2a.27)Dana Group

40.2a.27.1 Francevillite (Ba,Pb)(UO2)2V2O8·5(H2O) Pcan 2/m 2/m 2/m

40.2a.27.2 Curienite Pb(UO2)2V2O8·5(H2O) Pcan 2/m 2/m 2/m

Strunz Class:

VII/E.11-110 VII - Phosphates, Arsenates and Vanadates

VII/E - Uranylphosphates and uranylvanadates with: [UO2]2+ - [PO4 | AsO4]3- and [UO2]2+ - [V2O8]6-, uranyl-groupvanadates with [UO2]2+ - [V2O8]6-

VII/E.11 - Tyuyamunite series

VII/E.11-10 Vanuralite Al(UO2)2(VO4)2(OH)·11(H2O) A2/a 2/m

VII/E.11-20 Metavanuralite Al(UO2)2(VO4)2(OH)·8(H2O) P 1or P1 Tri

VII/E.11-30 Sengierite Cu2(UO2)2V2O8·6(H2O) P 2₁/a 2/m

VII/E.11-40 Strelkinite Na2(UO2)2V2O8·6(H2O) Pnmm,Pnm2 Ortho

VII/E.11-50 Carnotite K2(UO2)2V2O8·3(H2O) P 2₁/a 2/m

VII/E.11-60 Margaritasite (Cs,K,H3O)2(UO2)2V2O8·(H2O) P 2₁/a 2/m

VII/E.11-70 Vanuranylite? (H3O,Ba,Ca,K)1.6(UO2)2V2O8·4(H2O)(?) C 2/c ? 2/m

VII/E.11-80 Tyuyamunite Ca(UO2)2V2O8·5-8(H2O) Pnan 2/m 2/m 2/m

VII/E.11-90 Metatyuyamunite Ca(UO2)2V2O8·3(H2O) Pnam 2/m 2/m 2/m

VII/E.11-100 Francevillite (Ba,Pb)(UO2)2V2O8·5(H2O) Pcan 2/m 2/m 2/m

VII/E.11-110 Curienite Pb(UO2)2V2O8·5(H2O) Pcan 2/m 2/m 2/m

Other Curienite Information

References:

PHYS. PROP.(Enc. of Minerals,2nd ed.,1990)

See Also:

Links to other databases for Curienite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (UofA) 7 -MinDAT 8 -MinMax(Deutsch) 9 -MinMax(English) 10 -Mineralienatlas (Deutsch) 11 -QUT Mineral Atlas 12 - Uranium Minerals 13 - WWW-MINCRYST 14 -École des Mines de Paris

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Curienite

Pb(UO2)2V2O8·5(H2O)
Dana No: 40.2a.27.2 Strunz No: VII/E.11-110
Locality:

Notes: